重水之所以重是因为水中氢的重量是普通氢的两倍（它的原子核中有一个质子和一个中子，而不仅仅是一个质子）。
Heavy water is heavy because the hydrogen in it weighs twice as much as ordinary hydrogen (it has a proton and a neutron in its nucleus, instead of just a proton).
而且原子核越重，K因子的值越小。
注1：重的元素比铸铁制作的捕获中子的原子核。
Note 1: Elements heavier than iron are produced by the capture of neutrons by atomic nuclei.
“这是一个十分重要的进步，因为原子核和外界扰动很好的隔绝开了。”杰列维·扬科说。这开拓了一条“通往终极时钟”的道路。
"This is a very important development, as the nuclei are very well isolated from external perturbations," says Derevianko. It may open a path "toward the ultimate clock."
“这是一个十分重要的进步，因为原子核和外界扰动很好的隔绝开了。”杰列维·扬科说。这开拓了一条“通往终极时钟”的道路。
"This is a very important development, as the nuclei are very well isolated from external perturbations," says Derevianko. It may open a path "toward the ultimate clock."
应用推荐